Photo 1 of MACFOX E-Bike Four-Piston Hydraulic Disc Brake Replacement Set, Delivering Superior Braking Performance, Hydraulic Brake Upgrade for X1S

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Photo 1 of MACFOX E-Bike Four-Piston Hydraulic Disc Brake Replacement Set, Delivering Superior Braking Performance, Hydraulic Brake Upgrade for X1SPhoto 2 of MACFOX E-Bike Four-Piston Hydraulic Disc Brake Replacement Set, Delivering Superior Braking Performance, Hydraulic Brake Upgrade for X1S